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Finding the Fourth Proportional to 507,918.39, 700,919.39 and 278,477.65

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Solution

The fourth proportional to 507,918.39, 700,919.39 and 278,477.65 is: 384,294.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,918.39 : 700,919.39 = 278,477.65 : x
  2. Step 2: Convert to fraction form
    507,918.39/700,919.39 = 278,477.65/x
  3. Step 3: Cross multiply
    507,918.39x = 700,919.39 × 278,477.65
  4. Step 4: Simplify right side
    507,918.39x = 195,190,383,174.25
  5. Step 5: Solve for x
    x = 195,190,383,174.25/507,918.39
  6. Step 6: Final answer
    x = 384,294.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.